Kubota WSM 05-E4B Series User Manual

Symptom
Probable cause and checking
procedure
Solution
Refer-
ence
page
The starter does not operate 1. Discharged battery Charge or replace 4-25
2. The starter is damaged Repair or replace 4-27
3. The key switch is damaged Replace －
4. The wiring harness is discon-
nected
Connect －
The engine revolution is not
smooth
1. The fuel filter is clogged Replace 3-11
3-12
2. The air cleaner is clogged Clean or replace the air cleaner
element
3-8
3-15
3. Fuel leakage because of loose
injection pipe retaining nut
Tighten the retaining nut 4-32
4. The injection pump is dam-
aged
Replace 4-22
4-38
5. The injection nozzle pressure
is incorrect
Adjust 4-25
6. The injection nozzle is stuck or
clogged
Repair or replace 4-25
4-32
7. The governor is damaged Replace 4-39
The exhaust gas is white or blue 1. Too much engine oil Reduce it to the specified level 3-5
2. The piston ring, piston and cyl-
inder is worn out
Replace the piston ring or piston,
or repair the cylinder
4-62
4-64
4-70
3. Incorrect injection timing Adjust 3-17
The exhaust gas is black or dark
gray
1. Overload Reduce the load －
2. The grade of the fuel is low Replace the specified fuel 3-1
3. The fuel filter is clogged Replace 3-11
3-12
4. The air cleaner is clogged Clean or replace the element 3-8
3-15
5. Deficient nozzle injection Repair or replace nozzle 4-25
4-32
The output is deficient 1. Incorrect injection timing Adjust 3-17
2. The moving parts of engine
have a seizure
Repair or replace －
3. The injection pump is dam-
aged
Replace 4-22
4-38
4. Deficient nozzle injection Repair or replace nozzle 4-25
4-32
(Continued)
4. ENGINE
SERVICING
1. Troubleshooting
4-6
05-E4B SERIES,05-E4BG SERIES
KiSC issued 03, 2023 A

Kubota WSM 05-E4B Series Specifications

General

Brand	Kubota
Model	WSM 05-E4B Series
Category	Engine
Language	English